Question

Nous _______

mangeons le aller
le allons manger
allons le manger
allons manger le
le mangeons aller​

Answer 1

Nous allons le manger.

Le replace it. It’s like I am goung to eat a sandwich but you replace the sandwich by it and then you say I am going to eat it.

Answer 2

Nous allons le manger.

Explanation: I am going to eat.

I Honestly think "le" shouldn't be there.

Anyway, I hope it helps.